These Perfolight Folding Channel Ramps are strong, corrosion-resistant and capable of being moved, stored and set up with the minimum of fuss.A simple folding mechanism makes them very compact for easy storage and also enables the ramps to cope with a changing angle, such as when crossing a threshold. The raised sides and perforated bases help prevent slippage and the corrosion-resistant aluminium structure carries a comprehensive 2 year warranty. These are the 1100mm (43 inch) long version, but two longer options are also available.